475-750hp: Turbocharger Steel cast Single Scroll turbine house, Titanium-Aluminum Turbine Wheel, Ceramic ball bearings and water cooled bearing house. Turbo boost control valve with hoses included as well as compressor by-pass. Compressor wheel diameter: 83mm turbine wheel diameter: 74mm. Wastegate integrated. A/R=0,83. Turbine inlet flange: T3